Cogswell 1950 Falco sparverius 2 July 10 E. side Boca Des. [see p. 1] - I seen. July 12 Steamboat Springs, 4600 ft., Washoe Co., Nev. - I seen flying over dry (alkaline) grassy flat below hot springs. July 19 near Norden R.R. Sta. [see p. 1] - 1 pair together sedge & grass soaring in circles over broad greasy meadow. July 23 Truel Peak, 10,900 ft., Carson Range, Eldorado & Alpine Cos. Calif. - I flew over, "playing" up & around this above timber line peak on the brisk SW wind. July 24 E. side Boca Des. [see p. 1] - 2 seen (there in Aug. 7) July 26. 5800 ft., 3 mi. E, 1½ mi. N Truckee, Nevada & Calif. - I seen Aug. 9) in s over scattered, half-burned pines on a low grass & sagebrush-covered slope. July 26 Seiger Lookout, 5540 ft., 2 mi. E Steamboat Sprgs. Washoe Co. Nev. - I flew over, coasting rapidly downslope across pinions & jumpers toward sagebrush valley. July 27 Grosser Cr., 5650 ft., 2 mi. E, 1½ mi. S Hobart Mills Nevada G., Calif. - 1 pair over grassy valley along stream between sagebrush & arid Jeffrey pine forest. - Little Truckee R., 5800 ft., 3 mi. E, 5 mi. N Hobart Mills Sierra Co. Calif. - 2 in bigger, but similar valley. Aug. 2 "Sugar Bowl", 7300 ft., 1½ mi. SSW Donner Pass, Placer Co. Calif. A pair in flight over semi-barren slopes about forest. Aug. 5 Stampede Valley, 5900 ft., SE Sierra Co. Calif. - 2 over as perds open grassland & sagebrush, using rocks & fenceposts. Aug. 6 Carson Valley, Douglas & Ormsby Cos. Nev. - fairly common, 6-7 being seen in 2 hrs. auto travel. Washoe Valley, E or NE of Washoe L., Nev. - about 5 over open sagebrush-antelope brush.